The phrase "over spreads" refers to something that has spread over a certain area or surface. Some antonyms for this phrase could include "under shrinks," "inside contracts," or "beneath diminishes." These opposites suggest a decrease or reduction in size or coverage rather than an increase. Other antonyms may include "off dissipates," "outscatters," or "away disperses," implying that the substance or object has moved away from the original location. Antonyms for "over spreads" vary depending on the context in which the phrase is used but often involve concepts of reduction, movement away, or shrinking.